https://bugs.winehq.org/show_bug.cgi?id=30526
--- Comment #5 from Sjors Gielen winehq@sjor.sg ---
From looking into `WINEDEBUG=+d3d,+winediag,+relay wine dxdiag`, it seems the
Illegal instruction is not in wined3d_guess_card itself. The function returns a "fake card" (vendor ID 0x10de, device ID 0x0191) and Wine continues much further.
The original bug report for this bug never mentioned a crash after the method failure, but I still suspect the message and the crash are related. If not, I will file a new bug for the crash and leave this one rest in peace.